$119 Cheap Delta flights Portland (PDX) to St. Louis (STL)

View $119 flight on Wed, Apr 1, 2026Opens in a new window

$119 Cheap Delta flights Portland (PDX) to St. Louis (STL)

Prices were available within the past 7 days and start at $119 for one-way flights and $237 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Apr 1 - Wed, Apr 8
PDX
Portland
STL
St. Louis
$237 Roundtrip, found 1 hour ago
$237
Roundtrip
found 1 hour ago
Select Delta flight, departing Wed, Apr 1 from Portland to St. Louis, returning Wed, Apr 8, priced at $237 found 1 hour ago
Delta
Wed, Dec 31 - Sun, Jan 11
PDX
Portland
STL
St. Louis
$246 Roundtrip, found 2 days ago
$246
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Dec 31 from Portland to St. Louis, returning Sun, Jan 11, priced at $246 found 2 days ago
Flights from Portland (PDX) to St. Louis (STL)
Origin airport
Portland Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Popular airline
Alaska Airlines
Distance
1703 mi

Frequently asked questions

How much is a Delta Air Lines flight from Portland Intl. Airport (PDX) to Lambert-St. Louis Intl. Airport (STL)?
Use the "Price (lowest to highest)" filter on Expedia to look for cheap Delta Air Lines round-trip flights from $237 from PDX to STL. Affordable one-way options from $119 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from PDX to STL with Delta Air Lines?
Search for one-way or return flights to St. Louis in January or February. You could find a cheap fare with Delta Air Lines during these off-peak travel months.
What is the cheapest time to book flights from Portland Intl. Airport (PDX) to Lambert-St. Louis Intl. Airport (STL) with Delta Air Lines?
Look for cheap Delta Air Lines flights from Portland Intl. Airport (PDX) to Lambert-St. Louis Intl. Airport (STL) one to three months ahead of your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare type and journey, the best day of the week to book a domestic flight is usually Sunday and the most expensive day is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Delta Air Lines fly nonstop from Portland Intl. Airport (PDX) to Lambert-St. Louis Intl. Airport (STL)?
Click on the "Nonstop" filter when looking for direct Delta Air Lines flights from PDX to STL. It's also an easy way to compare other carriers servicing the same nonstop route.
What is the earliest Delta Air Lines flight from PDX to STL?
To find the earliest departure from PDX to STL with Delta Air Lines, filter your results by "Morning" and "Early Morning." Booking an early flight usually means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Delta Air Lines fly into in St. Louis?
Hop on a Delta Air Lines flight from Portland Intl. Airport (PDX) to St. Louis, and you'll most likely touch down at Lambert-St. Louis Intl. Airport (STL). This is the airline's main hub here.
Why fly with Delta Air Lines from PDX to STL?
Delta Air Lines makes traveling from PDX to STL enjoyable with an excellent in-flight experience and a rewarding loyalty program. You may even earn points with Delta SkyMiles. Remember to sign up to our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Delta Air Lines flight from Portland Intl. Airport (PDX) to Lambert-St. Louis Intl. Airport (STL)?
In most cases, you can modify or cancel your flight, although additional charges may apply if you booked more than 24 hours ago. Need to keep your options open? Make use of Expedia's "No cancel fee" and "Changes included" filters to find flights that won't charge extra if you have to adjust your plans. To make changes, visit "Trips," select your flight and click on "Manage Booking" for more information.

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*Available to One Key members.